Page "Glagolitic alphabet" Paragraph 9

From there, the students traveled to other places and spread the use of their alphabet.

Some went to Croatia ( into Dalmatia ), where the squared variant arose and where the Glagolitic remained in use for a long time.

In 1248, Pope Innocent IV gave the Croats of southern Dalmatia the unique privilege of using their own language and this script in the Roman Rite liturgy.

Formally given to bishop Philip of Senj, the permission to use the Glagolitic liturgy ( the Roman Rite conducted in Slavic language instead of Latin, not the Byzantine rite ), actually extended to all Croatian lands, mostly along the Adriatic coast.

The Holy See had several Glagolitic missals published in Rome.

Authorisation for use of this language was extended to some other Slavic regions between 1886 and 1935.

In missals, the Glagolitic script was eventually replaced with the Latin alphabet, but the use of the Slavic language in the Mass continued, until replaced by the modern vernacular languages.